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A platform for research: civil engineering, architecture and urbanism
Weak-dispersion early-strength retarder for oil well cement and preparation method thereof
The invention discloses a weak-dispersion early-strength retarder for oil well cement and a preparation method thereof, and belongs to the technical field of oil field chemicals and additives for oil well cement well cementation. The weak-dispersion early-strength retarder for the oil well cement comprises the following components in percentage by weight: 5-30% of AMPS, 5-30% of an unsaturated carboxylic acid monomer, 1-10% of acrylamide, 1-15% of a nonionic macromonomer and the balance of water. According to the invention, the problems of swelling and core wrapping at the temperature of 115-125 DEG C when an AMPS polymer retarder is matched with an AMPS polymer fluid loss agent can be solved, meanwhile, the problem that the stability of cement paste and the strength development of the top of set cement are influenced by too strong high-temperature dispersity of the AMPS polymer retarder can be solved, the comprehensive performance is good, and the actual construction requirements of high-temperature deep wells and complex wells can be met.
本发明公开了一种弱分散早强型油井水泥用缓凝剂及其制备方法，属于油田化学品及油井水泥固井用外加剂技术领域。本发明的一种弱分散早强型油井水泥用缓凝剂，包含以下重量百分比的成分，AMPS 5‑30％、不饱和羧酸单体5‑30％、丙烯酰胺1‑10％、非离子型大单体1‑15％、余量为水。本发明能解决AMPS类聚合物缓凝剂搭配AMPS类聚合物降失水剂在115‑125℃温度段“鼓包、包芯”问题，同时能解决AMPS类聚合物缓凝剂高温分散性太强影响水泥浆稳定性以及水泥石顶部强度发展，其综合性能良好，满足高温深井、复杂井的实际施工需要。
Weak-dispersion early-strength retarder for oil well cement and preparation method thereof
The invention discloses a weak-dispersion early-strength retarder for oil well cement and a preparation method thereof, and belongs to the technical field of oil field chemicals and additives for oil well cement well cementation. The weak-dispersion early-strength retarder for the oil well cement comprises the following components in percentage by weight: 5-30% of AMPS, 5-30% of an unsaturated carboxylic acid monomer, 1-10% of acrylamide, 1-15% of a nonionic macromonomer and the balance of water. According to the invention, the problems of swelling and core wrapping at the temperature of 115-125 DEG C when an AMPS polymer retarder is matched with an AMPS polymer fluid loss agent can be solved, meanwhile, the problem that the stability of cement paste and the strength development of the top of set cement are influenced by too strong high-temperature dispersity of the AMPS polymer retarder can be solved, the comprehensive performance is good, and the actual construction requirements of high-temperature deep wells and complex wells can be met.
本发明公开了一种弱分散早强型油井水泥用缓凝剂及其制备方法，属于油田化学品及油井水泥固井用外加剂技术领域。本发明的一种弱分散早强型油井水泥用缓凝剂，包含以下重量百分比的成分，AMPS 5‑30％、不饱和羧酸单体5‑30％、丙烯酰胺1‑10％、非离子型大单体1‑15％、余量为水。本发明能解决AMPS类聚合物缓凝剂搭配AMPS类聚合物降失水剂在115‑125℃温度段“鼓包、包芯”问题，同时能解决AMPS类聚合物缓凝剂高温分散性太强影响水泥浆稳定性以及水泥石顶部强度发展，其综合性能良好，满足高温深井、复杂井的实际施工需要。
Weak-dispersion early-strength retarder for oil well cement and preparation method thereof
一种弱分散早强型油井水泥用缓凝剂及其制备方法
LUO QING (author) / LI YONG (author) / TANG CHANGQIANG (author)
2024-01-02
Patent
Electronic Resource
Chinese
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